[结束提示音]：完成对话结束音效提示，包含本地短音生成、恢复待机播放和配置测试

tests/test_cli_acceptance.py

@@ -46,6 +46,8 @@ class CliAcceptanceTests(unittest.TestCase):
         self.assertEqual(data["endpoint_mode"], "primary_speaker")
         self.assertEqual(data["realtime_transcript_idle_timeout_ms"], 1500)
         self.assertEqual(data["context_mode"], "session_memory")
+        self.assertTrue(data["end_chime_enabled"])
+        self.assertEqual(data["end_chime_duration_ms"], 140)
         self.assertNotIn("secret-value", str(data))
 
     def test_security_check_command_has_no_leaks(self) -> None:

tests/test_live_runtime.py

@@ -269,8 +269,10 @@ class LiveRuntimeTests(unittest.TestCase):
         self.assertEqual(runtime.config.post_playback_drain_ms, 0)
         self.assertEqual(len(stt.calls), 2)
         self.assertEqual(len(llm.calls), 2)
-        self.assertEqual(len(transport.played_segments), 4)
-        self.assertEqual(transport.flush_count, 4)
+        self.assertEqual(len(transport.played_segments), 6)
+        self.assertEqual(transport.flush_count, 6)
+        self.assertEqual(transport.played_segments[2].metadata["chime"], "end")
+        self.assertEqual(transport.played_segments[5].metadata["chime"], "end")
         self.assertEqual(reporter.transcripts, ["第一问", "第二问"])
         self.assertIn("应答中：我在", reporter.statuses)
         self.assertLess(reporter.statuses.index("唤醒命中"), reporter.statuses.index("应答中：我在"))
@@ -324,7 +326,7 @@ class LiveRuntimeTests(unittest.TestCase):
         self.assertEqual(summary.completed_turns, 2)
         self.assertEqual(ack_tts.synthesized_texts, ["我在"])
         self.assertEqual(transport.played_segments[0].metadata["text"], "我在")
-        self.assertEqual(transport.played_segments[2].metadata["text"], "我在")
+        self.assertEqual(transport.played_segments[3].metadata["text"], "我在")
 
     def test_zero_post_playback_drain_flushes_without_dropping_prefilled_question(self) -> None:
         runtime, stt, _, transport, reporter = make_runtime(["第一问"])
@@ -335,7 +337,8 @@ class LiveRuntimeTests(unittest.TestCase):
         self.assertEqual(summary.completed_turns, 1)
         self.assertEqual(reporter.transcripts, ["第一问"])
         self.assertEqual(len(stt.calls), 1)
-        self.assertEqual(transport.flush_count, 2)
+        self.assertEqual(transport.flush_count, 3)
+        self.assertEqual(transport.played_segments[-1].metadata["chime"], "end")
 
     def test_no_ack_text_does_not_drain_before_capture(self) -> None:
         runtime, stt, _, transport, reporter = make_runtime(["第一问"], wake_ack_text="")
@@ -345,8 +348,9 @@ class LiveRuntimeTests(unittest.TestCase):
         self.assertEqual(summary.completed_turns, 1)
         self.assertEqual(reporter.transcripts, ["第一问"])
         self.assertEqual(len(stt.calls), 1)
-        self.assertEqual(len(transport.played_segments), 1)
-        self.assertEqual(transport.flush_count, 1)
+        self.assertEqual(len(transport.played_segments), 2)
+        self.assertEqual(transport.flush_count, 2)
+        self.assertEqual(transport.played_segments[-1].metadata["chime"], "end")
 
     def test_temporary_context_is_sent_to_second_llm_call(self) -> None:
         runtime, _, llm, _, _ = make_runtime(["第一问", "第二问"])
@@ -593,6 +597,7 @@ class LiveRuntimeTests(unittest.TestCase):
         self.assertIn(FOLLOWUP_TIMEOUT, event_types)
         self.assertEqual(event_types[-1], STANDBY_RESUMED)
         self.assertEqual(len(llm.calls), 1)
+        self.assertEqual(transport.played_segments[-1].metadata["chime"], "end")
 
     def test_completed_reply_returns_to_standby_without_cloud_classifier_delay(self) -> None:
         frames = [wake_frame(0, 0)]

tests/test_models_config.py

@@ -113,6 +113,9 @@ class ModelsConfigTests(unittest.TestCase):
             self.assertTrue(config.barge_in_enabled)
             self.assertEqual(config.barge_in_min_speech_ms, 250)
             self.assertEqual(config.barge_in_echo_guard_ms, 500)
+            self.assertTrue(config.end_chime_enabled)
+            self.assertEqual(config.end_chime_frequency_hz, 880)
+            self.assertEqual(config.end_chime_duration_ms, 140)
             self.assertTrue(config.llm_stream)
             self.assertEqual(config.validate_basic(), [])
 
@@ -153,6 +156,8 @@ class ModelsConfigTests(unittest.TestCase):
             followup_listen_timeout_ms=-1,
             barge_in_min_speech_ms=-1,
             barge_in_echo_guard_ms=-1,
+            end_chime_frequency_hz=0,
+            end_chime_duration_ms=0,
         )
         errors = config.validate_basic()
 
@@ -161,6 +166,8 @@ class ModelsConfigTests(unittest.TestCase):
         self.assertTrue(any("OWNER_FOLLOWUP_LISTEN_TIMEOUT_MS" in error.message for error in errors))
         self.assertTrue(any("OWNER_BARGE_IN_MIN_SPEECH_MS" in error.message for error in errors))
         self.assertTrue(any("OWNER_BARGE_IN_ECHO_GUARD_MS" in error.message for error in errors))
+        self.assertTrue(any("OWNER_END_CHIME_FREQUENCY_HZ" in error.message for error in errors))
+        self.assertTrue(any("OWNER_END_CHIME_DURATION_MS" in error.message for error in errors))
 
     def test_speaker_similarity_threshold_range_is_validated(self) -> None:
         config = AppConfig(speaker_similarity_threshold=1.5)

tests/test_pipeline_llm_tts.py

@@ -12,7 +12,7 @@ from owner_voice_pet.models import AudioFrame, ErrorCode, Message, PipelineState
 from owner_voice_pet.pipeline import VoicePipeline
 from owner_voice_pet.stt import MetadataSttProvider
 from owner_voice_pet.transport import MemoryAudioTransport
-from owner_voice_pet.tts import CloudTtsProvider, SentenceBuffer, SineTtsProvider, sanitize_tts_text
+from owner_voice_pet.tts import CloudTtsProvider, SentenceBuffer, SineTtsProvider, make_prompt_chime, sanitize_tts_text
 from owner_voice_pet.vad import EnergyVadProvider, VadRecorder
 from owner_voice_pet.wakeword import KeywordWakeWordProvider
 
@@ -73,6 +73,13 @@ class PipelineLlmTtsTests(unittest.TestCase):
         self.assertGreater(len(segment.pcm), 0)
         self.assertGreater(segment.duration_ms, 0)
 
+    def test_prompt_chime_generates_short_pcm_audio(self) -> None:
+        segment = make_prompt_chime(frequency_hz=880, duration_ms=140, sample_rate=16000, channels=1)
+
+        self.assertEqual(segment.duration_ms, 140)
+        self.assertEqual(segment.metadata["chime"], "end")
+        self.assertGreater(len(segment.pcm), 0)
+
     def test_cloud_tts_posts_speech_request(self) -> None:
         class FakeResponse:
             def __enter__(self):